谁帮着调试一下这python代码。把这个效果给弄出来？给高分
from nntplib import NNTP
from time import strftime, time, localtime
from email import message_from_string
from urllib import urlopen
import textwrap
import re
day = 24*60*60 #一天的秒数
def wrap(string, max = 70):
"""
将字符串调整为最大行宽
"""
return '\n'.join(textwrap.wrap(string))+'\n'
class NewsAgent:
"""
可以从新闻来源获取新闻项目并且发布到新闻目标的对像
"""
def __init__(self):
self.sources = []
self.destinations = []
def addSource(self, source):
self.sources.append(source)
def addDestination(self, dest):
self.destination.append(dest)
def dirtribute(self):
"""
从所有来源获取所有新闻项目并且发布到所有目标
"""
items = []
for source in self.sources:
items.extend(source.getItems())
for dest in self.destination:
dest.receiveItems(items)
class NewsItem:
"""
包括标题和主体文本的简单闻新项目
"""
def __init__(self,title,body):
self.title = title
self.body = body
class NNTPSource:
"""
从NNTP组中获取新闻项目的新闻来源
"""
def __init__(self, servername, group,window):
self.servername = servername
self.group = group
self.window = window
def getItems(self):
start = localtime(time() - self.window*day)
date = strftime('%y%m%d',start)
hour = strftime('%H%M%S',start)
server = NNTP(self.servername)
ids = server.newnews(self.group, date, hour)[1]
for id in ids:
lines = server.article(id)[3]
message = message_from_string('\n'.join(lines))
title = message['subject']
body = message.get_paylaod()
if message.is_multipart():
body = body[0]
yield NewsItem(title, body)
server.quit()
class SimpleWebSource:
"""
使用正则表达式从网页中提取新闻项目的新闻来源
"""
def __init__(self, url, titlePattern, bodyPattern):
self.url = url
self.titlePattern = re.compile(titlePattern)
self.bodyPattern = re.compile(bodyPattern)
def getItems(self):
text = urlopen(self.url).read()
titles = self.titlePattern.findall(text)
bodies = self.bodyPattern.findall(text)
for title, body in zip(titles, bodies):
yield NewsItem(title, wrap(body))
class PlainDestination:
"""
将所有新闻项目格式化为纯文本的新闻目标类.
"""
def receiveItems(self, items):
for item in items:
print item.title
print '-'*len(item.title)
print item.body
class HTMLDestination:
"""
将所有新闻格式化为html的目标类
"""
def __init__(self, filename):
self.filename = filename
def receiveItems(self, items):
out = open(self.filename, 'w')
print >> out, """
<html>
<head>
<title>Today's News</title>
</head>
<body>
<h1>Today's News</h1>
"""
print >>out, '<ul>'
id = 0
for item in items:
id += 1
print >> out, '<li><a href="#%i">%s</a></li>' % (id, item.title)
print >> out, '</ul>'
id = 0
for item in items:
id += 1
print >> out, '<h2><a name="%i">%s</a></h2>' % (id, item.title)
print >> out, '<pre>%s</pre>' % item.body
print >> out, """
</body>
</html>
"""
def runDefaultSetup():
"""
来源和目标的默认设置,可以自已修改.
"""
agent = NewsAgent()
#从BBS新闻站获取新闻的SimpleWebSource:
bbc_url = 'http://news.bbc.co.uk/text_only.stm'
bbc_title = r'(?s)</a>\s*<br />\s*<b>\s*(.*?)\s*</b>'
bbc_body = r'(?s)</a>\s*<br />\s*(.*?)\s*<'
bbc = SimpleWebSource(bbc_url, bbc_title, bbc_body)
agent.addSource(bbc)
#从comp.lang.python.annouce获取新闻的NNTPSource:
clpa_server = 'news.foo.bar' #
clpa_group = 'comp.lang.python.announce'
clpa_window = 1
clpa = NNTPSource(clpa_server, clpa_group, clpa_window)
agent.addSource(clpa)
#增加纯文本目标和HTML目标：
agent.addDestination(PlainDestination())
agent.addDestination(HTMLDestination('news.html'))
#发布新闻项目
agent.distribute()
if __name__ == '__main__': runDefaultSetup()
把最后一行if前面的缩进删除掉再试。
